Title pretty much says it all. I have looked for the answer to this all over, and I can't find a clear answer. I am sure many of the older users on this forum know what I am talking about. I seem to have known that the Obi-Wan vs Anakin battle occurred on a volcanic planet for years. The oldest source I actually own is Star Wars: Behind the Magic, which if you don't know, is sort of a cd-rom encyclopedia of SW. I think it came out in 1999 or 98, and yet I knew about this battle even before then somehow. Did Lucas reveal it in an interview? Is it mentioned in a novel? How did we know about the volcanic battle 20 or maybe even 30 years ago?